Recrystallization of Ni_3 Al Base Single Crystal Alloy IC6SX with Different Surface Mechanical Processes

作     者：Yanan Li 

作者机构：School of Materials Scienceg and-Engineering Beijing University of Aeronautics and Astronautics Beijing 100083 China Beijing Institute of Aeronautical Materials Beijing 100095 China Fine Metals Branch Advanced Technology &: Materials Co. Ltd. (AT&M) Beijing 100081 China 

出 版 物：《Journal of Materials Science & Technology》 (材料科学技术（英文版）)

年 卷 期：2010年第26卷第10期

页      面：883-888页

核心收录：

学科分类：080503[工学-材料加工工程] 08[工学] 080502[工学-材料学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0802[工学-机械工程] 080201[工学-机械制造及其自动化] 

主　　题：Ni3Al Single crystal alloy Recrystallization Surface layer 

摘      要：The recrystallization behavior of Ni 3 Al base single crystal alloy IC6SX with different mechanical processes has been *** specimens of the alloy were treated by surface cleaning and cold working during the blades manufacture,and then heat treated in the temperature range of 800-1260℃ for 1 h to 4 *** microstrcture of the specimens were examined by optical and scaning electron microscopy,and the room temperature tensile property,stress rupture property under the test condition of 1100℃/130 MPa,and the thermal cycle fatigue resistance under 1100-20℃ of the specimens with and without recrystallization were carried *** experimental results showed that the initial recrystallization nucleation temperatures of the alloy by dry grit blasting,wet grit blasting,indentation,shot blasting and burnishing were 900-950℃/1 h,1000-1100℃/1 h,1200-1220℃/4 h,1220-1240℃/1 h and 1220-1240 C/1 h,respectively and the primal recrystallization completing temperatures of the alloy by those mechanical processes mentioned above were 1200-1210℃/1 h,1100-1200℃/1 h,1220-1240℃/4 h,1240-1260℃/1 h and 1240-1260℃/1 h,*** results also indicated that the deformation amount of the specimens by burnishing and dry grit blasting was bigger than that by wet grit blasting and shot blasting according to their recrystallization temperature and the microhardness profile below the surface of *** has been found that the recrystallization had no evident effect on mechanical properties of the alloy.